The work will be performed in Groton, Conn.; Newport News, Va.; Quonset, R.I.; and Bath, Maine. The U.S. Department of Defense
expects the work to be complete by September 2017. The Naval Sea
Systems Command in Washington, D.C., is listed as the contracting
activity.

Columbia-class submarines,
formerly known as Ohio Replacement submarines, are future vessels
designed to replace the Trident-armed Ohio-class submarines. The
ballistic missile vessels are being designed to be propelled with a
nuclear reactor, enabling unlimited range.

Construction on the vessels is expected to begin in 2021, with the first Columbia-class submarine entering service in 2031.